GoKawiilMozilla report: Chinese open-weight AI models now trail US leaders by just 4 months
Mozilla's latest State of Open Source AI report, using data through September 1, finds top Chinese open-weight models are closing in on closed US frontier systems, lagging by only a few percentage points on key benchmarks while costing far less to run. The report estimates the capability gap at roughly 4.4 months based on METR task-horizon data, close to Epoch AI's independent four-month estimate, and notes one Chinese model scored within a point of a leading Claude model on Terminal-Bench at under a fifth of the price.